export declare function tryParseJson(s: string): any;
export declare class StringUtils {
    /**
     * Returns a name that does not exist in [existingNames].
     * If [existingNames] does not contain [initialName], returns [initialName].
     * Otherwise, tries [choices], and if the names are taken already, returns a string in a form of 'initialName (i)'.
     */
    static getUniqueName(initialName: string, existingNames: string[], options?: {
        auto?: boolean;
        idx?: number;
        render?: Function;
        choices?: string[];
    }): string;
    static isEmpty(s: string | null): boolean;
    static formatNumber(x: number): string;
}
//# sourceMappingURL=string-utils.d.ts.map